Ultrathin magnetic structures. Vol. I: An Introduction to the electronic, magnetic and structural properties. Edited by J. A. C. Bland and B. Heinrich, Springer Berlin 1994, xvi, 350 pp., hardcover, DM 119.00, ISBN 3-540-57407-7. Vol. II: Measurement techniques and novel magnetic properties. Edited by B. Heinrich and J. A. C. Bland, Springer, Berlin 1994, xvi, 350 pp., hardcover, DM 129.00, ISBN 3-540-57687-8